In Love & War is the fourth studio album by American singer Amerie, released November 3, 2009, on Def Jam Recordings.

[6] She spoke about the concept of In Love & War in an interview with The Green Magazine, stating: Conceptually, I just really wanted to write about the tumultuous times of a relationship.

[10] In Love & War was released on November 3, 2009, in the United States under exclusive license by Amerie's own imprint label, Feenix Rising, which distributed it through the Island Def Jam Music Group.

[14][15] Def Jam released a six-track album sampler containing snippets of "Higher", "Tell Me You Love Me", "Pretty Brown", and "Red Eye", as well full versions of "Heard 'Em All" and "Why R U", which had been remastered.

[32] About.com's Mark Edward Nero gave it 3½ out of five stars and called it "a hip, energetic album that properly showcases her singing talent".

Music gave In Love & War a rating of eight out of ten and lauded Amerie for her "old-skool virtues" and sound, while calling the album "an exemplary exercise in R&B songwriting and performance, brim-full of verve, spark and vigour".

[35] In contrast, Steve Jones of USA Today gave the album 2½ out of four stars and expressed a mixed response towards its ballads, stating "The sassy funk numbers serve her best, while the mushy stuff only slows her down".

[31] Despite writing favorably of its uptempo tracks, Rolling Stone's Christian Hoard gave the album three out of five stars and perceived its slower material as a weakness.

[29] Boston Herald writer Lauren Carter gave In Love & War a B− rating and commended its "ambient, hip-hop-infused R&B" tracks, but wrote that "monotonous lyrics about rocky or recently ended relationships dominate the album".

[36] However, AllMusic's Andy Kellman gave the album four out of five stars and wrote favorably of its ballads, calling them "as well constructed as anything earlier in the set".